Microneedle instrument



FIG. 1 is a perspective view of a microneedle instrument showing the claimed design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a rear elevation view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a detailed cross-sectional view of a portion of the perimeter of FIG. 2; and,

FIG. 9 is a detailed cross-sectional view of a portion of the perimeter of FIG. 7.

The broken lines illustrate portions of the microneedle instrument that form no part of the claimed design. 

CLAIM The ornamental design for a microneedle instrument, as shown and described. 